hex password

[freestaff]

hello all,

i have a one hccap file and i need hex mask code like ?d?d?d?d?d?d?d?d


specifically   1234567890 - abcdef  8 char like 22dd134f or ff2aad33 or 222edfa7

how can i mask lowercase and digital hex based 8 char...

(im use cudahashcat64.bin)

ty for the help, sorry for language : )